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Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

P · Proven prime
id #1100000009058004878 1,852 digits created 2026-08-08

Value

2890194927213737822468791835568173341363966657659911253842495230969636247727747205456869081425030870775896974751616725275983914808389649829396465904144109809882675663061625759169796036763618271431342567819102553963208104259027428324344690978465832267779326727544810669366083630271936215963932095132018041355033215279114583095412048506417703973210739723221136387406876699117028780061334482561708541070834664312921066322198796867850966611496610016867564223960745757250608120779250674561942830996656881065040688328403302137781421054088249392655307929284585958146651806484655416934369343244786977061700552416530879115096793290860914038573769937871886403880575534909363799090627364478696692456922967181226688779861223360248194434833102871475087578416260536881737025687632633520125227633098180508328799172705248018834343474331447809874961606494074811899650178571698103817264380662706812157402960705920333151817007711844991476483208133584079299677432259628047474006661787237275317226296696361984004159855512467559653686435276735074415306287852257315970049058847428469496316350126650556755591938405797137010250760129510153121181029630227938864892685133568864606682293752241773873868251596987805247719012078346240865516307130437849958887477337132147854598835161380428281998732007208102223862453699215723016450594650759265225520260515906850318742160422962670377027897920282179408895995260388139858470418161855917956832183903066765479073951020928782844692078384693120972808874931127015967704638817054262754495385147002003523007553167200275400752969316604090697599071772267572539863844364266088979348167391571644161214352056427869718494270673620715016646184893189315408282607041510382773249641922518066431748177757343530848675820257045941910300795987916696596221911255903902136716780519605710565495235337493788663929397620937699923227209338824892702673902018627699
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 29 of the certificate chain of a 2,255-digit prime (166 intermediate primes).

Certified number2,255-digit prime
Certificatedownload
Certificate chainshow step 29 of 166

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009058004878 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000009058004878},"decimal":true,"detail":2}}'